Scouting the spectrum for interstellar travellers |
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| Institution: | 1. Universidad Complutense de Madrid, Spain;2. Universidad Autónoma de Madrid, Spain;3. Hospital Gregorio Marañón, Madrid, Spain;4. Universidad Pompeu Fabra, Barcelona, Spain;5. Montreal Neurological Institute, MNI, Canada;1. School of Civil and Engineering, North China University of Technology, Beijing 100144, PR China;2. School of Architecture, Harbin Institute of Technology, Harbin 150090, PR China;1. College of Criminology and Criminal Justice, Florida State University, Tallahassee, FL 32306-1127, USA;2. Center for Social and Humanities Research, King Abdulaziz University, Jeddah, Saudi Arabia;3. School of Criminology and Criminal Justice, University of Nebraska at Omaha, Lincoln, NE 68588-0561, USA;4. Department of Psychology, Western Illinois University, Macomb, IL 61455, USA;5. Institute of Psychology, Erasmus University, Rotterdam, The Netherlands |
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| Abstract: | Advanced civilizations capable of interstellar travel, if they exist, are likely to have advanced propulsion methods. Spaceships moving at high speeds would leave a particular signature which could be detected from Earth. We propose a search based on the properties of light reflecting from objects travelling at relativistic speeds. Based on the same principles, we also propose a simple interstellar beacon with a solar sail. |
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